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Previous studies suggest that medication adherence strongly related to cardiovascular outcome, including rehospitalization event.The study aims to determine the correlation between antihypertensive medication adherence and rehospitalization rate.We conducted a cross sectional research of hypertensive heart failure patient, who were hospitalized in Saiful Anwar Hospital from January to December 2017. Data were collected based on patient demographic, medical history, laboratory findings, antihypertensive therapies, and readmission events. The association between medication adherence and rehospitalization events were examined using logistic regression.Hypertension was noted among 57,8% heart failure patient. Among hypertensive patient, as much as 39,8% were controlled. Compliance between controlled patient only 21,1%. The risk of hospitalization was increased stepwise with decreasing adherence. The hazard risk for the risk of hospitalization were estimated as 5.578 (CI 95% 2.561 – 12.945) for the poor adherence group. We also examine the precipitating factors related to rehospitalization event. They were acute coronary syndrome (31,3%), poor compliance (21,1%), infection (12,7%), hypertension crisis (12,0%), arrhythmia (11,4%), and others (11,4%).Poor medication adherence was associated with a greater risk of hospitalization.